90561151 has 4 divisors (see below), whose sum is σ = 92488032. Its totient is φ = 88634272.

The previous prime is 90561127. The next prime is 90561167. The reversal of 90561151 is 15116509.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90561151 - 2¹⁷ = 90430079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90561851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963370 + ... + 963463.

It is an arithmetic number, because the mean of its divisors is an integer number (23122008).

Almost surely, 2^90561151 is an apocalyptic number.

90561151 is a deficient number, since it is larger than the sum of its proper divisors (1926881).

90561151 is a wasteful number, since it uses less digits than its factorization.

90561151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926880.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 90561151 is about 9516.3622776773. The cubic root of 90561151 is about 449.0699325434.

The spelling of 90561151 in words is "ninety million, five hundred sixty-one thousand, one hundred fifty-one".